A cobpobation of mas



July 12 1927.

J. M. LONDON MINING MACHINE Original Filed May 15, 1915 4 Sheets-Sheet .1

limwemib 1 m5 O O \m R w m mwm July 12 v1927; 35,488

J. M. LQNDON MINING MACHINE Originaf Filed Ma,v15, 1915 4 Sheets-Sheet 2 T141 era/Z0 2w: JZZCOEM L on/daazw,

July 12 1927.

J. M. LONDON MINING MACHINE 1915 4 Sheets-Sheet 3 Original Filed May 15 .Invew/vor JCOEM London,

,7 1,635,488 Ju y 12 ,1927- J M. LQNDON MINING MACHINE Original Filed Mayl5, 1915 4 Sheets-Sheet 4 Patented July 12, 1927.

UNITED STATES JACOB M. LONDON, OF TUNNELTON, PENNSYLVANIA, ASSIGNOR T0 SULLIVAN MA.- CHINERY COMPANY, OF CLAREMONT, NElK HAMP HXR-E, A CORPORATION OF MAS- SACHUSETTS.

MINING MACHINE.

Application filed May 15, 1915, Serial No. 28,449. Renewed March 3, 1924.

This invention relates to mining machines and more particularly, though not exclusively, to coal mining machines employing movable cutting devices adapted to be presented to the coal to cut a kerf or channel therein.

The invention will be best understood by reference to the following description in connection with the accompanying drawings, which d-escriptionand drawings relate to a referred construction of one specific embo iment of my invention while the scope of my invention is more particularly pointed out in the appended claims.

Referring to the drawings:

Fig. 1 is a plan of one embodiment of my invention without the separable coal cutter;

2 is a side elevation thereof also without the separable coal cutter;

Figs. 3, 4:, 5 and 6 illustrate a preferred construction of my invention in various positions during operation;

Fig. 7 is a vertical section on the line 7-7 of Fig. 1 showing detail of the latch mechanism;

Fig. 8 is a vertical section on the line 88 of Fig. 2 showing detail of mechanism for positioning the swivelled frame when rctracted in the guiding frame;

Fig. 9 is a. vertical section on line 9-9 of Fig. 1 showing detail of the clamping mechanism Fig. 10 is enlarged side elevation of a portion of the truck frame and sliding frame, with a portion broken out to show the rabbeting.

Fig. 11 is a partial vertical section'on line 11-11 of Fig. 1 showing the turntable locking mechanism;

12 me vertical section of the on of the turntable frame on the line ].21 of Fig. 1';

Fig. 13 is a vertical section on the line l313 of Fig. 1;

Fig. 14 is a vertical section on the line 1414; of Fig. 1;

Fig. 15 is a. side elevation of one embodiment of my invention including the coal cutter mounted thereon parts of the truck being broken away and parts of the machine and truck being omitted to facilitate illustration, and

Fig. 16 is a plan view of one embodiment of the apparatus shown in Fig. 1, but with the turntable angularly 1n .lned.

Fig. 17 is a vertical section in the same plane as Fig. 12 showing details of the truck drive.

i Vhile this invention is by no means restricted to feeding guiding and po..' ioning mechanism it pertains largely thereto and for this reason I have shown my feecing and positioning mechanism, system and connections as used in connection with a pre ferred. type of chain cutter machine heretofore largely used for cutting coal while sliding on the mine bottom and while being fed. uided and positioned by flexible tension members in a manner which may resemble somewhat the mechanism of the pat-- cut to Mitchell No. 656,41 .41. The liiii'tcheil type of machine is very useful for room and pillar cutting and in a modified form for long wall cutting, but it has cert" n disad-- vantages for entry cutting which it is one of the purposes of this invention to over come without in an way impairing the value of the machine for other purposes.

In the specific embodiment of my invention illustrated in the drawings, I have shown a chain cutting machine of the before described type comprising the shoe 100, the cutter bar 101. the cutter chain 102, the flexible feeding and positioning means typified by the chain 103 and the source of power illustrated by the motor 101 adapted through any desired power transi'i'iission devices to impart cutting movement to the chain 102 and feeding and positioning movement of the chain 103, the feeding mechanism as usual in such machines being adapted when once connected in one relation to draw in one end of the chain at a predetermined slow cutting speed and when once connected in another relation to draw in the other end of the chain at a predetermined higher moving speed. Machines'of this type are of great utility in room and pillar cutting and in long wall cutting preferably while sliding along the mine bottom adjacent a wall to be undercut,

the machine pulling): itself along by tension- 'table lecking means point behind the machine, the advance ten- 7 sion in "ans being preferably operatively connected to the front of the machine at a point relatively close to the face to be cut and the mechanism which may be used to adapt said machine to radial cutting especially for entry cutting preferably without in any way impairing its usefulness and adaptability for room and pillar or long wall work.

To accomplish this I may provide any suit- :ible rotatable coal cutter supporting means as the turntable 1 rotatably mounted'onthe turntable bed 2, provided with the stepearing It is desirable to provide turn- 7 the pin 4 adapted to pass through holes 5 in the turntable 1, "and holes 6 in the turntable bed 2 to lock them in any desired relative position.

it is advantageous to provide a frame 7 in which said turntable as a whole may be guided and supported for longitudinal sliding inoven'ient. An efficient method of accomplishing this is to attach parallel guiding members typified by the angle irons 8, to the turntable bed 2 which may cooperate with guiding n'ioans typified by parallel an gle irons 9 on the frame 7 between which the guiding members 8 may slide. To prevent tipping of the turntable I have found it de- Sll'tlblGufO provide rabbeting between the guiding members typified by the gib 10, attached to the angle iron 9 and the gib 11 attached to the angle 1ron8.

To lock said turntable bed at any desired point in the frame 7, I may provide clamps 12 having set screws 13, and adapted to clanp the guide 8 to the guide 9 and hence prevent relative movement of such guides. To firmly position and secure the coal cut-' ting machine on the turntable, I may provide any suitable positioning means, but I prefer to attach thereto a frame which may consist of parallel angle irons 37 serving to prevent lateral displacement of the coal cutter by engaging the sides of the bed thereof, and a back for the frame whichmay be typified by the angle iron 52. To firmlysecure thecoal cutting 1 machine in the frame, preferably with its center ofgravity disposed, as shown, substantially'over the swivel, in such a manner as to facilitate movement of the parts. I may provide keepers 38 or any other suitable securing means which may be adapted to prevent movement of the machine in the frame.

To promote ease of transportation I pref roll 42 recei.

erab'ly provide the frame 7 with a plurality of wheels let mounted on axles 15 and 56, the axle 15 turning in journals 16 and ,provic ed with a sprocket 1'? adapted to receive power from the actuator of the coal cutter. This may be accomplished by providing the gear 18 adapted to engage the gear 105 of the coal cutter when the latter isre'tracted to the rear en-a the frame 7a'n'tl held there preferably by the engagement of the latch 20 The gear 18 is h in a journal on the bracket 22, and throu ii any suitable geani-ng 1 imparts rotary .niotion to the shaft on which is a s which throughany suitable drivingchain SQ-imparts power ,to thesprocket 1'7 and lence to the wheels it. If desired, a sprocket on theaxle 15 may impart power to a sprocketon the other ,aXle 56through a chain 57. Intermediate the gear 18 and the shaft 30 I prefer to utilize drive and brake mechanism 38 which may be controlled by the common handle 34.- and the shaft the latter preferably -ineluding adjusting means as the nuts 36. No

feature of novelty or invention in this tap )lication is based on the s iecitic nearin em ployed, hence I have not unnecessarily complicated the drawings or specification with the details thereof. i

At the back the machine I may provide hangers 39 for a reel s0 adapted to hold \the wire or hose di or other conduit or conductor adapted to supply power to-the ma chine. To provide for keeping the conduit or conductor Ltlllt when the machine is running liiaekwar-ds, I may provide a friction ing rotation through gearing-1nv the casing 4-8. The head A of the'reel-4O rests this friction roll when the rmain the form of jack 45, to steady thermachine. The function of this "support is to support the forward end of the truck or guiding means whe the mining machine ETC- ceiving frame is advanced on the guiding means. and to elevate this end when it is desired to operate at an angle tothe hori Zontal, or when it is desired to load or unma -hine on a bench on which load a mining the mining machine can operate :under its own power as a bottom cutting machine. it

all"

ran

will also be evident that with this construe-Y uneven bottom, as by simply varying the length of the support in a well known manner :1t is thus possible to provide a sturdy support without any necessity for laying,

track or leveling thebottom.

In the illustrative embodiment of my invention shown in the drawings I have located the axles 15 and 56 rather close together so as to facilitate turning sharp curves in the track 46 which may cooperate with the wheels 14 which may be flanged as shown. When the axles are as aforesaid, one end of the frame 7 overhangs a considerable distance. To prevent tipping of the frame when in operation, two of the jacks 45 may be located adjacent the end of the overhanging portion of the frame 7. I may swivel the heads 47 of the jacks 45 to the frame, and provide projections 48 adapted to receive the depending portion of the jacks when not in use. i

The overhanging of the frame is of marked advantage in loading a d unloading the coal cutter flOlllllllG turntable 1, as the frame may be tipped so as to lower that end of the frame facilitating the loading or unloading of thecoal cutter under its own power by means of the flexible positioning chain 103 and the actuator 104 therefor.

For convenience in attaching the end of the aforesaid chain'103, I may 15 rovide at various places on the apparatus suitable chain engaging members as the hooks 49.

The following is a description of tl1e.op eration of the apparatus in driving an entry. a class of work for which it is peculiarly well, adapted.

Referring to Fig. 3, the track 46 is laid in the general direction in which the entry is to be extended and the apparatus run onto said track with the front end of the frame '7 adjacent the wall to be cut. The jacks 45 are then adjusted and the brake applied to steady the frame 7.

The turntal'ile 2 with the coal cutter thereon is swung .into the position shown in Fig. 3 and the tension chain 103 is fastened to the front of the framework 7 as shown. The motor 104 is then started, actuating the cutter chain 102 and pulling on the feeding chain 103, thus gradually pulling the sliding bed 2 and the apparatus mounted on it forward along the frame 7, the cutter chain mean while cutting out the coal as shown in Fig. 4. l vhen the position shown in Fig. 4 is attained the bed 2 locked to the frame 7. by means of the clamp 12, and the pin 4 is removed to permit rotation of the turntable 1 on the bed 2. The end of the tension chain 103 unfastenet from the frame and fa tened as shown in Fig. 4.

The cutter chain 102 and feeding mecha- "sm are again started, with the result that the bed ren'iains stationary while the turntable and coal cutter turn axially by the pull of the feeding mechanism on the chain 103 until the position of the cutter shown in Fl 5 is reached. The coal will then be undercutas shown in 5. The cutting and feeding is then stopped while the bed 2 is unclamped from the frame 7 by loosening the clamp 12, the turntable 1 again locked to bed 2 and the chain 103 attached to the frame 7 as shown in d The cutting and feeding mechan sm then cooperate to pull the bed 2 and 'm' ised mechanism back, to the posil iwn in F 6, completing the remain he kerf. l i hile the coal so undercut is being removed fron'i this entry, the apparatus may be moved to another entry or used for lei. wall cutting or breast cutting while still on the truck, but if it is desired to use the coal cutter on a low cut it may easily be disniounted from the turnta. ie 1 by process heretofore described. After being thus dismounted the coal cutter is ready for work in its other capacities for room and pillar cutting or long wall work, while sliding on the mine bottom.

If desired, I may provide distance pieces adapted to raise the shoe 100 of the coal cu'ter higher above the turntable 1 so as to vary the height of kerf, but I prefer to accomplish this by blocking up the track 46.

It should be noted that the truck mounted guiding means and the swiveled mining machine receiving frame are especially adapted to the driving of entries and room necks herc the entry is of greater height than the vein of coal. Under these conditions, the mining machine unit, which is preferably of the self-propelling type, is moved forward on the guides 9 until the coal seam is reached, which is, in entry work, at the end of the guic and, in the driving of room necks, at one side of the guides. The mining machine may then make the necessary cuts, i. e. in the material above or below the coal or in the coal vein so that the coal may be removed free of impurities. Further, it Will also be clear that when desired, the machine may be unloaded directly onto a. bench and that, after the coal has been mined for some distance in the manner which is termed bench cutting, the mining machine may be reloaded onto the truck and the rock or other bench drilled and blasted or otherwise removed so as to advance the entryway.

loo

countered in mine tunnels. Further, througl'r the use of a supplemental support it hasthe advantages of a long truck in that when the apparatus is to be used during a cutting operation in an entryway or room-neck where the track is impe1rt=ctly laid or cannot be laid, the weight of the mining machine is distributed over a large area, a large partof the same being directly supported by the mine bottom. The spacing of the acks from the front wheels and under the long overhanging end of the guiding means also makes it possible to bridge the intervening space between the end of a trackway and the face of an entryway or the end of a bench, an important feature, as it is rarely possible to lay the tracks right up to the face of the entry and sometimes undesirable to do so.

As is clearly shown in Figs. 3, 5, and 6, in my improved construction anchorage means'are provided on the truck for attaching the end of the flexible feeding means so that it is not necessary to fasten anchors to the entry walls or face to reciprocate the cutting apparatus on the guides, it only being necessary to provide extraneous anchorage means when it is necessary to swing the cutter bar during the transverse cutting operation, as is shown in Fig. 4.

It will alsobe evidentthat certain features of my invention, including the longitudi nally movable swiveled machine receiving member with my improved means for supporting and guiding the same or feeding the same or the machine relative thereto or to the trackway, or my improved cooperating truck driving means, may be advantageously embodied in various other types of mounted cutters or embodied in transport trucks for room and pillar or other machines, without departing from the spirit of my invention. These and other advantages of my improved mining apparatus will, however, be apparent to those skilled in the art.

While for the purpose of illustration I have herein shown and described one specific embodiment of the invention, it is to be understood that the same is not limited to the constructional details and parts or their relative arrangement herein specifically indicated, but that extensive deviations may be made from the described embodiment without departing from the spirit of the inven tion, and that many features herein described in combination may be usefully employed independently or in other connections than in therelations they occupy in the described type of machine.

Claims:

1. Coal cutting apparatuscomprising, in

adapted to be placed with its forward ex tremity adjacent the face of the coal and in a position at right angles to the face, and a support for said rotatable supporting means mounted for guided longitudinal movement onsa'idtruck mounted guiding means, whereby said kerf cutter may be swung or moved longitudinally to cut a kerf across the end of said guiding means while guided by said guiding means for cutting movement in a single plane, said truck being'held stationary during the cutting operation.

L2.GO21'1 cuttingrapparatus comprising, in combination, a kerf cutter comprising an elongated cutter bar having thereon orbital- 'ly movable cutting elements operative to cut a kerf to admit the bar whether the latter be presented to the coal by movement perpendiculartoits length, parallel to its length, or when disposed at an acute angle to the face, a rotatable feeding member, actuating means including a common actuator motor for said kerf cutter and said feeding member; rotatable supporting means supporting said kerf cutting element, said feeding member and said actuator motor; a wheel mounted truck; guiding means'mountedion said truck; a support for said rotatable supporting means mounted for guided longitudinal movement in said guiding means; anchorage means; and flexible means connecting said anchorage means and said feeding member,

whereby said feeding member by tensioning said flexible means may feed said rotatable supporting means longitudinally on said guiding means and rotate said kerf cutter to make sumping, transverse and withdrawal cuts.

3. Coal cutting apparatus comprising, in combination, a kerf cutter comprising an elongated cutter bar having thereon orbitally movable cutting elements operative to cut a kerf to admit the bar whether the latter be presented to the coal by movement perpendicular to its length, parallel to its length,

or when disposed at an acute angle to the 1 Mad face, a rotatable feeding member, actuating means including a common actuator motor for said kerf cutter and said feeding member; rotatable supporting means supporting said kerf cutting element, said feeding memher and actuator motor; a wheel mounted truck; guiding means mounted on said truck; a support for said rotatable supportingmeans mounted for guided longitudinal movement in said guiding means; anchorage means; and flexible means connecting said anchorage means and said feeding member, whereby said feeding member by tensioning said flexible means may swing said rotatable supporting means or may feed said rotatable supporting means longitudinally on said guiding means to make sumping, transverse and withdrawal cuts.

4. Coal cutting apparatus comprising, in combination, a rotatable turntable, a separable chain cutter coal machine of the sliding bed, chain positioned type, mounted on said turntable, locking means for securing said coal machine to said turntable, turntable supporting means including a non-rotatable turntable base, a frame having running gear adapted to support said frame for movement about a mine, said frame being adapted to constitute transport means for said turntable, coal cutting machine, and turntable base, and feeding mechanism to produce relative movement of said turntable base and said frame.

5. Coal cutting apparatus comprising, in combination, a rotatable turntable, a separable chain cutter coal machine of the sliding bed, chain positioned. type, mounted on said turntable, locking, means for securing said coal machine to said turntable, turntable supporting means including a non-rotatable base, a frame, and feeding mechanism to produce relative moi-einent of said turntable base and said frame, wheels supporting said frame, transmission mechanism for trans mitting power to said wheels from the ac tuator of said coal machine, and locking and positioning means for POSlblOllillg longitu dinally and also angularly about its axis said turntable and said coal machine in proper relation to said transn'iission mechanism. I

(3. A turret mounted coal mining machine having a turret and a truck in combiiiation with feeding means adapted to move said turret relative to said truck successively longitudinally, angularlmand longitudinally in the opposite direction, said feeding means including a plurality of anchors disposed in front of said turret and at the side and rear thereof, a rotatable member mounted on said turret, and flexible tension means connectible successively with said anchors and constantly engaging said rotatable member, the cooperation of said rotatable member, said flexible tension means and said anchors being operative per se to effect the opposite longitudinal movements or the angular movement of said turret.

7. Coal cutting apparatus comprising, in combination, a combined transport and guiding frame adapted to constitute a transport element during movement from place to place in a mine and a guiding frame during certain cutting operations, a rotatably movable support mounted on said guiding frame, a complete coal cutter comprising a shoe on which said cutter is adapted to slide while cutting independently of said guiding frame, a cutter chain, feeding mechanism, and an actuator for said cutter chain and said feeding mechanism; said coal cutter be ing separably mounted on said support and detachable therefrom. for operation independent of said guiding frame.

8. Coal cutting apparatus comprising, in combination, a combined transport and guiding frame adapted to constitute a transport elementduring movement from place to place in a mine and a guiding frame during certain cutting operations, arect-ilinearly and rotatably movable support mounted for movement as a whole on said frame, a complete coal cutter comprising a shoe on which said cutter is adapted to slide while cutting independently of said frame, a cutter chain, feeding mechanism, and an actuator for said cutter chain and said feeding mechanism; said coal cutter being separably mounted on said support and detachable therefrom for operation independent of said frame.

9. Coal cutting apparatus comprising, in combination, a combined transport and guiding frame adapted to constitute a transport element during movement from place to place in a mine and aguiding frame during certain cutting operations, a rotatably movable support mounted on said guiding frame; a cornplete coal cutter comprising a shoe on which said cutter is adapted to slide while cutting independently of said guiding frame, a cutter chain, flexible tension feeding mechanism, and an actuator for said feeding mechanism; said coal cutter being separably mounted on said support and detachable therefrom for operation independent of said guiding frame.

10. Goal cutting apparatus con'iprising, in combination, a. combined transport and guiding f ameradapted to constitute a trans port element during movement from place to place in amine and a guiding frame during certain cutting operations, a rectilinearly and rotatably movable support mounted on said frame, a complete coal cutter on said frame comprising a'shoe on which said cutter is adapted to slide while cutting independent- 1y of said frame, a cutter chain, flexible tension feeding mechanism, and an actuator for said cutter chain and said feeding mechiao anism; said coal cutter being separably mounted on said support and detachable therefrom for operation independent of said frame.

11. Coal cutting apparatus comprising, in combination, a relatively short wheeled truck; an elongated guiding frame mounted on said truck and overhanging one end of said truck whereby said end may be placed adjacent the face of an entry with the guiding frame substantially at right angles thereto; a longitudinally movable support mounted for guided longitudinal movement in said frame; a turning support mounted on said longitudinally movable support and longitudinally movable therewith, a kerf cutting element and its driving motor mounted on said turning support, and feeding means driven by said driving motor for longitudinally moving and turning said respective supports, said parts being so constructed and arranged that the longitudinally movable support and parts carried thereon may be superposed over the wheels of said truck during transport. I

12. Goal cutting apparatus comprising, in combination, a relatively short wheeled truck; an elongated guiding frame mounted on said truck and overhanging one end of said truck; a longitudinally movable support mounted for sliding guided longitudinal movement in said frame; a turning support mounted on said longitudinally movable support and longitudinally movable therewith, a kerf cutting element and its driving motor mounted on said turning support, and feeding means driven by said driving motor for longitudinally moving and turning said respective supports for making sumping, transverse and withdrawal cuts beyond the overhanging end of said guiding frame, said parts being so constructed and'arranged that the longitudinally movable support and parts carried thereon may be superposed over the wheels of said truck during trans port. I

13. Goal cutting apparatus comprising, in

combination, a relatively short wheeled truck adapted for movement on a traclrway; an elongated guiding frame mounted on said truck an d overhanging one end of said truck whereby said end may be placed adjacent the face of an entry with the guiding frame substantially at right angles thereto; a longitudinally movable support mounted for uided lon itudinal movement in said frame l b V 7 a turning support mounted on said longitudinally movable support and longitudinally movable therewith, an endless kerf cut.- ting element and its driving motor mounted on said turning support, and means for preventing tipping movement of the overhang:

ing end of said elongated frame, said parts,

bein so constructed anc arran ed that the longitudinally movable support and parts,

carried thereon may be superposed. over the wheels of sald truck during, transport.

on'said swivel support and movable longi- I tudinally therewith, a mining machine carried by said. machine support and having a driving motor and a. cutter bar provided with cutting elements operative. on presentation of the bar to. the coal at any angle between perpendicularity and parallelism to its path of bar movement. to. out a: kerf to.

receive the bar, and means adapted to be fastened to said. anchorage means-and driven by said machine for moving said machine support longitudinally.

' 15. In a mining apparatus, a supporting member presenting longitudinally. disposed guiding means extending to a. point adja cent the coal face, a supplemental support ing member for the guiding means, anchorage means mounted on said supporting mems her, a. swivel support movable longitudinally relative to said supporting member and guided by said guiding means, a. mining machine support swiveled on said swivel :upport and movable longitudinally there with, a mining machine carried by said machine support, and having a driving motor and a cutter bar provided with cutting elements operative on presentation of the bar to the coal at any angle between perpendicularity and parallelism to its path of bar movement to cut a kerf to receive the bar,

ane means adapted to be fastened to said anchorage means and driven by said machine for moving said machine support longitudinally,

In a mining apparatus, a supportmember presentinglongitudinally disposed guiding means extending to a point adjacent the-coal face, anchorage means mounted on said supporting member, a

' s vivel support movable longitudinally. relative to said supporting member and guided;

by said guiding means, a mining machine support swiveled on said swivel support and movable longitudinally therewith, a mining machine carried by said machine support and having a cutter bar provided. with cutting elements operativev on presentation of the barto the coal at any angle between. perpendieularity and parallelism, to its path of bar movement tocut a lrerf toreceive the bar, and flexible means adapted to be fastened to Said anchorage meansand driven by said machine for moving said machine'support longitudinally.

17 In a mining apparatus, a mining ma chine truck presenting longitudinally disposed side rails constituting guiding means projecting a substantial distance in advance of the truck wheels, a swivel support movable relative to said truck and guided by said guiding means, a mining machine sup, port swiveled on said swivel support and movable therewith, a mining machine luv ing an elongatedcutter chain carrying outter bar and a driving motor and carried as a whole by said machine support, said bar being provided with cutting elements arranged to cut a kerf to receive the bar on presentation of the latter to the face either perpendicularly or at a substantial angle to the latter.

, 18. In a mining apparatus, a mining machine truck presenting elongated longitudinally disposed guiding means, truck wheels disposed adjacent the rear end of said truck, cooperating supporting means disposed beneath the opposite end of said truck, truck driving means carriedvat the rear end of said truck and connected to said wheels, a swivel support slidable over the portion of said guiding means in front of said wheels, a mining machine swiveled on said swivel support having means cooperating with said truekdriving means, means for rigidly connecting said mining machine to said swivel support when at an angle relative to said guiding means, and flexible means operatively connected to, said'machine and to a point in advance thereof for bodily advancmg, said swivel support approximately to the front end of said guiding, means.

19. In a mining machine, a support presenting longitudinally disposed guiding means extending to a point adjacent the coal face, a swivel support slidable longitudi nally of said guiding means substantially to the front end thereof, a complete mining machine swiveled on said slidable support, means whereby said mining machine may be attached to said swivel support or detached therefrom for angular movement relative thereto or for use independently thereof, and flexible feeding means operatively connected to'said machine whereby the latter may be propelled longitudinally with said slidable support and swung relative thereto or be propelled when used independently of said support.

20. In a miningapparatus, a miningma- .ehine truck presenting elongated longitudinally disposed guiding means, truck wheels disposed adjacentthe rear end of said truck,

cooperating supporting means disposed beneath the opposite end of said truck, truck driving means carried at the rear end of said true and connected to'said wheels, a swivel support slidableover the portion of said guiding means in front of said wheels, a.

mining machine swiveled on said swivel supmately to the front end of said-guiding means and upon release of said mining machine from said swivel support, thereafter swinging said mining machine bodily about its axis thereon.

21. In a mining apparatus, a mining machine truck presenting elongated longitudinally disposed guiding means, truck wheels disposed adjacent the rear end of said truck, cooperating supporting means disposed beneath the opposite end of said truck, truck driving means carried at the rear end of said truck and connected to said wheels, a swivel support guided by said guiding means and slidable over the portion of the same in front of said wheels, a mining machine swiveled on said swivel support having means coopcrating with said truck driving means, fieXi-' 'bodily retracting said mining machine and swivel support on said guiding means, and means for rigidly connecting said mining machine to said swivel support during said longitudinal movements.

22. Mining apparatus comprisingwheeled guiding means, mining machine receiving means adapted to receive and wholly support a mining machine adjustably mounted on said guiding means for n'rovement longitudinally and angularly relative to said guiding means, and wheel driving means adapted to be driven from a mining machine on said receiving means in a predetermined position of the latter.

23. Mining apparatus comprising wheeled guiding means, mining machine receiving means adjustably mounted for longitudinal and angular movement thereon and relative thereto, and a mining machine of the selfpropelling separately operable type carried by said receiving means.

24-. hfiining apparatus comprising wheeled guiding means, mining machine receiving means adapted slidably to receive a mining machine and mounted for longitudinal sliding movement on said guiding means and for angular movement relative thereto, and

a stilt-propelledmining machine slidable on said receiving means and movable therewith.

' 25. Mining apparatus comprising wheeled guiding means, mining machine receiving means adjustably mounted for longitudinal and angular movement thereon and relative thereto, wheel propelling mechanism, and a mining machine wholly supported by and slidable on and movable with said receiving means and operatively connectible to said wheeb propelling mechanism.

26. Mining apparatus comprising wheeled guiding means, mining machine receiving means, adjustably mounted for longitudinal and angular movement thereon and relative thereto, wheel propelling mechanism, a mining-machine carried wholly by said receiving means and driving said propelling mechanism, and means actuated by said machine for moving the latter longitudinally and angularly relative to said guiding and wheel propelling means.

27. In a mining apparatus, a wheeled truck, swivel'ed machine receiving member movable translatively relative thereto, a: selEfi-propel ied mining machine supported on and movable relative to said receiving member, and means for selectively moving said mining machine or said receiving mem-- ber relative to said truck.

28. In a mining apparatus, a wheeled truck movable on a trackway, a swiveled machine receiving member slidable bodily longitudinally' thereof, a self-propelled mining machine slid-ably supported on said receiving member, and means for selectively moving said mining machine or said receiving member relative to said trackway.

29; Ina mining apparatus, a wheeled truck, a swiveled machine receiving member mov able translatively as a whole relative to said truck, a self-propelled separately operable mining machine carried on said receiving member with its center of gravity substantially over the swivel thereof, and means for moving said receiving member relative to said truck.

30. In a mining apparatus, a wheeled truck movable over a trackway, a swiveled machine receiving member movable translatively as a whole relative to said truck, a self-propelled separately operable mining machine carried on said receiving member with. its center of gravity substantially over the swivel thereof, and means for moving said receiving member angularly or bodily relative to said trackway.

ber, and means forfmoving said swiveled' receiving member longitudinally in one dimachine receiving and rection and angularlyx relative to said t'ruclt and thereafter longitudinally in an opposite direction.

32. In mining apparatus, a wheeled guiding truck movable on a traclrway, Wheel driving mechanism thereon, aswiveled machine receiving member slidfablebodily len gitudina-l ly or said truck, a self-prepelled means adapted removably to receive a min? ingmachine of the sel f propell'ing separatelyoperabl'e type; I I

34. Mining apparatus comprisinga truck having a lOll-g gni'di-ng meansand a rein-- tively short wheelbase, said truck being movable on: a mine trackwaytothe end tliereof with the front, end o f'the guiding means extending: beyond the trackway, a separatelyoperable'mining machine comprising a cutter bar movablesubstantially the length of the guiding means, a pivotal mounting for supporting the cutter'bar with its free end at one side of the guiding means, and means for moving said cutter bar reetilinea-rly on the guiding means while so disposed toward anentry face'to make a sumpingcut thereiniir advance offsai'd guiding: means. i

Mining apparatus comprising a self propelling, separately operable mining machine and supporting meansitheretor' comprising a truck having a long guiding means and: arelntivety' short wheel base, said truckbeing movable on a mine trackway to-the endthereof with the front end of the guiding means extending beyond the trackway, and mcanscarriedzby the guiding means-for supporting a mining machine forliengitudinali movement in opposite: directions relative to the truck, andameansjfior moving said mining machine in both directions for cutting kerfs during said longitudinal m-onements.

3x). Mining apparatus: comprising a sell?- propelli-ng-separately operable mining machineand-supporting means therefor com;- prising a truck having a long'guiding means anda, relatively short wheel: base, said' trucle' being movabte on. a mine trackway' to the end thereof withthe frontend of'the' guiding means extending beyond thev trackway, and means carried by the guiding means; for supporting a mining mach-inc fer longitud i nal movement in opposite directions and an gular movement relative to the truck, and means for moving said machine longitudinally and angularly for cutting kerfs during said longitudinal and angular movements.

Mining apparatus comprising a truck having a long guiding means and a relatively short whee base, said truck being movable on a mine trackivay to the end thereof With the front end of the guiding means extending beyond the trackivay, bracing means for the front end of the guiding means, and a sliding pivotal support on said guiding means adapted to. receive a mining machine of the self-propelling separately operable type.

38. Mining apparatus comprising a truck having a long guiding means and a relatively short Wheel base, said truck being movable on a mine trackway to the end thereof With the front end of the guiding means extending beyond the trackvvay, and a sliding pivotal support on said guiding means adapted to receive a mining machine of the self-propelling separately operable typewhen said sliding pivotal support is adjacent the front end of the guiding means and at an angle thereto.

39. Mining apparatus comprising a truck having a long guiding means and a relatively short wheel base, said truck being movable on a mine trackvvay to the end thereof With the front end of the guiding means extending beyond the trackway, bracing means for the front end of the guiding means, and a sliding pivotal support on said guiding means adapted to receive a mining machine of the self-propelling separately operable type when said sliding pivotal support is adjacent the front end of the guiding means and at an angle thereto.

40. Mining apparatus comprising a truck having a long guiding means and a relatively short Wheel base, said truck being mo *able on a mine trackWay to the end thereof With the front end of the guiding means extending beyond the trackway, adjustable bracing means hingedly secured to the front end of the guiding means, and a sliding pivotal. support on said guiding means adapted to receive a mining machine of the self-propelling separately operable type.

41. Mining apparatus comprising a truck having a long guiding means and a relatively short Wheel base, said truck being movable on a mine trackvvay to the end thereof with the front end of the guiding means extending beyond the trackway, and a sliding pivotal support on said guiding means adapted to receive a mining machine of the self-propelling separately operable type and support the mining machine for kcrf cutting at either side of or across the end of said guiding means.

Mining apparatus comprising a truck,

.tion on the uiding means.

guiding means thereon, truck driving mechanism mounted thereon, mining machine receiving means adjustably mounted on said guiding means for movement longitudinally and angularly relative thereto, a mining mane comprising a driving motor and a cutting element both on said receiving and mechanism whereby said driving motor is connected to said truck driving mechanism when the mining machine is in a pre'cletern incd position on the guiding means.

43. Mining apparatus comprising a truck having a long guidingmeans and a relatively short Wheel base, said truck being movable on a mine trackivay to the end thereof With the front end of the guiding means extending beyond the trackivay, truck driving means carried by the truck, means carried by the guiding means for supporting a. mining machine having an actuator motor and a lrerf cutting element for longitudinal and til) angular movement as a Whole relative to the truck for cutting herfs during said longitudinal and angular movements, and mech-- anism adapted to connect said actuator and said truck driving mechanism when the mining machine is in a predetermined 44-. In a mining apparatus, the combina tion of extended parallel bars constituting guiding means, a truck normally supporting said guiding means and located towards one end thereof, normally inoperative means carried by said guiding means for support ing llllQuOtllGl end thereof at will, and means, mounted for movement longitudinally of said guiding means, for supporting a mining machine of the separately operable type which is operable to cut a kerf when sliding on the mine bottom.

4-5. In a mining apparatus, the combination of extended parallel bars constituting ling means, a truck normally supporting said guiding means and located towards one end thereof, normally inoperative means carried by said guiding means for supporting the other end thereof at Will, and means including a turntable mounted for movement longitudinally of said guiding means for supporting a mining machine of the separately operable type Which is operable to cut a kerf When sliding on the mine bottom.

46. Mining apparatus comprising a truckposiguiding means, a truck normally supporting said guiding means and located towards one end thereof, normally inoperative means carried by said guiding means for supporting the other end thereof at Will comprising extensible props adapted to be moved into substantially upright position beneath said guiding means, and means mounted for movement, longitudinally of said guiding means for supporting a mining machine of the self-propelled separately operable type.

bination, a relatively short wheeled truck adapted for movement on atrackway; an elongated guiding frame mounted on said truck and overhanging one end of said truck wherebysaid end may be placed adjacent the face of the coal beyond the end of the trackway with the guiding frame at substantially right angles to the face of the coal: a longitudinally movable support mounted for guided longitudinal movement in said frame; a turning support mounted on said longitudinally movable support and longitudinally movable therewith; and an endless kerf cutting element and its actuator motor mounted on said turning support, said endless kerf cutting element having a guiding element supporting it for orbital movement in a horizontal plane and arranged to cut a k-ei-f to admit said guiding element when said clement makes any acute angle to the direction of its path of bodily movement.

49. Mining apparatus comprising, in com bination. a relatively short wheeled rtruclr adapted for movement on a trackway; an elongated guiding frame mounted on said truck and overhanging one end of said truck whereby said end may be placed adjacent the face of the coal beyoi'id the end of the traclrway with the guiding frame at substantiallv right angles to the face of the coal; adjustable bracing n'ieans for said end a longitudinally movable support mounted. for guided longitudinal movement in said frame; a turning support mounted on said longitudinally movable supportand lon tudinally movable therewith; and an endless kerf cutting element and its actua or motor mounted on'said turning support, said endless kerf cutting element having a guiding element supporting it for orbital movement in a horizontal plane and arranged to cut a kerf to admit said guiding element when said element makes any acute angle in the direction of its path of bodily movement.

50. Mining apparatus comprising, in rombination, a relatively short wheeled truck adapted for movement on a trackway; an elongated guiding frame mounted on said truck and overhangingone end of said truck whereby said end may be placed adjacent the faceof the coal beyond-the ,end of the trackWa-y with the guiding'fraine at sub- 48. Mining apparatus comprising, in com-' stantially right angles to the faceof the coal; a longitudinally movable support mounted for guided longitudinal movement in said frame; a turning support mounted on said longitudinaliy movable support and longitudinally movable therewith; an endless kerf cutting element and its actuator motor mounted on said turning support,said endless kerf cutting element having a guid ing element su viporting it for orbital movement in a horizontal plane and arranged to cut a kerf to admit saidv guiding element when said clement makes any acute angle to the direction, of its path of bodily movement; and means for preventing tipping movement of the overhanging end of said elongated frame.

51. lilining. apparatus comprising, in com bination, arelatively short, wheeled truck adapted for movement on a trackway; an elongated guiding frame mounted on said truck and overhanging one end ofsaid truck whereby said end. may be placed adjacent the face of the coal beyond the end of the trackway with. the guiding frame at substantially right angles to the face of the coal; a longitudinally movable support mounted for guided longitudinal movement in said frame; a turning support mounted on said longitudinally movable support and longitudinally movable therewith; an endless kerf cutting element and its actuator motor mounted on said turning support,

aid endless kerf cutting element having a guiding element supporting it for orbital .ll'lOVQIZ'lCili? in a horizontal plane and ar- ;,ran ;ed to cut a kerf. to admit said guiding element when said element makes any acute angle to the direction of its pathof bodily movement; and means'for producing longitudinal or rotative movement of said kerf cutting element with respect to said guiding frame for making sun'iping, transverse or d awal cuts beyond the end of said a 3 frame. 7

mining ap iratus including a wheeled truck movable over a trackway and having a longitudinal guide thereon, a mining machine of the separately operable bottom cuttin type having an elongated cutter chain ca ying cutter bar, means whereby said mining machine is swiveled on said truck and adapted to swing freely thereon across the end thereof or to be held indifferent fixed angular positions relative thereto, and a swivel support movablelongitudinally of said guide and adapted to be heldin different longitudinal positions thereon.

58. Mining apparatus including a wheeled truclrmovable over a tra'ckway and having a longitudinal guidethereon, a mining machine of the separately operable bottom cutting type having anelongated cutter chain carrying cutter bar, means. whereby said mining machine is swiveled on said truck Zoo and adaptedvto swing freely thereon across the end thereof or to be held in different fixed angular positions relative thereto, a swivel support movable longitudinally of said guide and adapted to be held in different longitudinal positions thereon, and operative connections to said mining machine whereby the latter may be swung or moved bodily with said swivel support as desired.

54;. Mining apparatus including a wheeled truckinovable over a tracliway and having a longitudinal-guide thereon, a mining machine of the separately operable bottom cutting type having anelongated cutter chain arrying cutter bar, means whereby said n'iining machine is swivelcd on said truck and adapted to swing freely thereon across the end thereof or to be held in different fixed angular positions relativethereto, a swivel support movable longitudinally of said guide and adapted to he held in different longitudinal positions thereon, and operative connections to said miningmachine whereby the latter may be swung or moved bodily with said swivel support as desired at either a cutting speed or a higher moving speed.

55. Mining apparatus including a wheeled truck movable over a trackway and having a longitudinal guide thereon, a mining machine of the separa-telyioperable bottom cutting type having flexible feeding means and an elongated cutter chain carrying cutter bar, means whereby said mining machine is swiveled on said truck and adapted to swing freely thereon across the end thereof or to be held in different fired angular positions relative thereto, a swivel support movable hmgitudinally of said guide and adapted to be held indifferent longitudinal positions thereon, and-operative connections to said mining machine wherel'iy through the use of said flexible feeding means said cutter bar may be swung or moved bodily with said swivel longitudinally of said guide as desired, i V

56. hr'iining apparatus including a wheeled truck movable over a traclrway and having a longitudinal guide thereon, a mining machine of the bottom cutting type having tlexiblc feeding means and an elongated cutter chain carrying cutter bar, means whereby said mining machine is swiveler on said truck and adapted to swing freely thereon across the end thereof or to be held in diffen ent fixed angular position relative thereto, a swivel support movable longitudinally of said guide and adapted to be held i diflen ent longitudinal positions taereow. d open ative connections to id 111" machine whereby through the use of feeding means said cutter bar may be swung or moved bodily with said swivel longitudinally of said guide as desired at either a cutting speed or a higher moving speed,

57. Mining apparatus including a wheeled truck movable over a trackway and having a longitudinal guide thereon, a mining machine of the bottom cutting type having lienible feeding means and an elongated cutter chain carrying cutter bar, means whereby said mining machine swiveled on id truck and adapted to swing freely thereon across the end thereof, to be held in di'lferent fixed angular positions relative thereto, or to be removed therefrom for independent operation on a mine bottom, and a swivel support movable longitudinally of said guide and adapted to be held in diii erent longitudinal positions thereon.

58. Mining apparatus including a wheeled truck movable over a traclrway and having a longitudinal guide thereon, a mining machine of the bottom cutting type having lie ible feeding means and an elongated cutter chain carrying cutter bar,'means whereby said mining machine is swiveled on said truck and adapted to swing freely thereon,

across the end thereof, to be held in different fixed angular positions relative thereto, or to be removed therefrom for independent operation on a mine bottom, a swivel support n'iovable longitudinally of said guide and adapted to be held in different longitudinal positions thereon, and operative connections to said mining machine whereby through the use of said flexible feeding means said mining machine may be swung, moved bodily with said swivel longitudinally of said truck, or removed from the latter, as desired. Mining apparatus including a. wheeled truck movable over a traclrway and ha ring a longitudinal guide thereon, a mining machine of the separately operable bottom on ting type having an elongated cutter chain carrying cutter bar, means whereby said mining machine is swiveled on said truclr and adapted to swing freely thereon across the end thereof or to be held in different fixed angular positions relative thereto. a swivel support slidable longitudinally of sii 7 guide and adapted to be held in different longitudinal positions thereon, and operative connections connectibl at will to said mining machine to drive the truck wheels.

60, Mining apparatus including a wheeled truclr movable over a traclrway and having a longitudinal guide thereon, a mining machine of the separately operable bottom cutting type having an elongated cutter chain carryin cutter bar, means whereby said mining ma '11s is swiveled on said ck and adapted to swing freely thereon across the end thereof or to be held in different lin d angular positions relative thereto, a swivel support slidable longitudinally of said I and adapted to be held in oitferent longitudinal positions thereon and operative connections connectible at will to said mining machine to drive the truck wheels in one position of said machine and of the separately operable type adapted to cut when sliding directly on the mine bottom, and means whereby said bar may be horizontally swiveled on the projecting end of said guide after a longitudinal movement relative to said guide.

52. Mining apparatus including a wheeled truck movable over a trackway having a longitudinal guide supported thereon projecting a substantial distance in advance of the truck wheels and supplemental means for supporting said guide in front of the truck wheels, a mining mechanism having an elongated cutter chain carrying cutter bar and of the separately operable type adapted to cut when sliding directly on the mine bottom, means whereby said bar may be horizontally swiveled on the projecting end of said guide after alongitudinal movement relative to said guide, and operative connections to said mining mechanism whereby the latter may be moved bodily relative to said guide or may be swung thereon as desired.

63. Mining apparatus including a wheeled truck movable over a trackway and having a longitudinal guide supported thereon projecting a substantial distance in advance of the truck wheels and supplemental means for supporting said guide in front of the truck wheels, a mining mechanism having an elongated cutter chain carrying. cutter bar and of the separately operable type adapted to cut when sliding directly on the mine bottom, means whereby said bar is horizontally swiveled on said truck and adapted to swing freely thereon, and a swivel carryingmember movable longitudinally of said guide.

64. Mining apparatus including a wheeled truck movable over a tracliway and having a longitudinal guide supported thereon. projecting a substantial distance in advance of the truck wheels and supplemental means for supporting said guide in front of the truck wheels, a mining mechanism having flexible feeding means and an elongated cut ter chain carrying cutter bar and of the separately operable type adapted to out when sliding directly on the mine bottom, means whereby said bar is horizontally swiveled on said truck. and adapted to swing freely thereon, a swivel carrying member movable longitudinally of said guide, and 'means whereby through the use of said flexible feeding. means said mechanism may be moved bodily longitudinally of said guide or swung relative thereto as desired.

lilining apparatus including a wheeled truck movable over a tracltway and having a longitudinal guide thereon projecting a substantial distance in advance of the truck wheels and supplemental means for supporting said guide on'the mine bottom, a mining machine of the separately operable bottom cutting type thereon having flexible feeding means and an elongated cutter chain carrying cutter bar, means whereby said i'i'iining machine is swiveled on said truck and adapted to swing freely thereon, a swivel carrying member movable longitudinally of said guide, and operative connections whereby through the use of said flexible feeding means said mining machine may be moved bodily longitudinally of said guide or swung relative thereto as desired.

66. Mining apparatus including a wheeled truck movable over a trackway and having a longitudinal guide thereon projecting a substantial distance in advance of the truck wheels and supplemental means for supporting sa l guide in front of the truck wheels, a mining machine of the bot-tom cut-ting type having flexible feeding means and an elongated cutter chain carrying cutter bar, means whereby said mining machine may be swiveled on said truck and adapted to swing freely thereon, a swivel carrying member slidable longitudinally of said guide, and operative connections connectible at will to said mining machine to drive the truck wheels.

(57. Mining apparatus including a wheeled. truck movable over a trackway and having means operating to form an elongated guide, a mining machine of the separately operable bottom cutting type having an elongated cutter chain carrying cutter bar, a swivel movable longitudinally of said guide, and a machine carrying member movable with said swivel and about the latter in which said mining machine is operatively disposed during cutting.

68. Mining apparatus including a wheeled truck movable over a trackway, means thereon cooperating to form an elongated guide, a mining machine of the separately operable bottom cutting type having an elongated cutter chain carrying cutter bar, aswivel movable longitudinally of said guide, a machine carrying member movable with said swivel and about the latter in which said.

mining. machine is operatively disposed durin g cutting, and means wherebysaid machine a mine bottom and which is provided with an elongated cutter chain carrying cutter bar, means whereby said mmlng machine is swiveled on said truck and adapted to swing 70, ltlining apparatus inclut iing a wheeled truck movable over a traclzway and having a guide thereon, a mining machine of the separately operable bottom cutting type having an elongated cutter chain carrying cutter bar, means whereby said mining machine is swiveled on said truck and adapted to swing freely thereon or to be held in different fixed positions relative thereto, a swivel support slidable longitudinally of said guide, and means for fixing said swivel support to said guide in longitudinally different positions relative to the latter comprising a plurality of clamps. a

71. In a mining apparatus, a wheeled truclr having guide thereon, a swivel carryiug member slidable relative to said guide, aswivel on said support, a machine carrying member movablebodily with said swivel and about theaxis of the latter adapted to receive a mining machine, and means for bold ing both of said carrying members in position, comprising clamping mechanism and pin mechanism.

7 In a mining apparatus, a wheeled truck having a guide thereon, a swivel support slidable relative to said guide, a swivel on said support, a machine carrying member movable bodily with said swivel and about the axis of the latter, a flexibly fed mining machine removably attached to said carrying member and movable at will longitudinally thereof, and truck wheel driving mechanism connectible to said machine when all of the above mentioned elements occupy a predetermined position relative to the truck.

'73. In a mining apparatus, a wheeled truck having a guiding surface thereon, a swivel support slidable relative to said surface, a swivel on said support, a machine receiving member movable bodily, with suit .vivel and about the axis of the latter, a separately operable mining machine removably carried by said receiving member, and means for connecting said mining machine to said receiving member, said ii'eceiving member to said swivel support, and said swivel support to said truck.

, 7'4; In a mining apparatus, a wheeled truck having machine receiving member thereon, a mining machine of the flexibly fed bottom cutting type carriedon said receiving member and removable at will for work independent thereof, a support slidableon said truck and carrying a swivel for said receiving member, means for holding said elements in different relations, and means whereby said elements may be adjusted through use of the flexible feeding mechanism of said machine.

75.111 a mining apparatus, a wheeled 'lruclr having a machine receiving member thereon, a mining machine of the flexibly fed bottom cutting type carried on said receiving member and removable at will for work independent thereof, a supportslidable on said truck and carrying a swivel for said receiving member, means for holding said elements in different relations, means whereby said elements may be adjusted through use of the flexible feeding mechanism of said machine, and truck iwheel driving mechanism opcratively connectible to said machine when said elements assume a predetermined relationship,

76. Mining apparatus including a guide disposed perpendicularly to a face, a mining machine of the separately operable bottom cutting type thereon having an elongated cutter chain carrying cutter bar, means whereby said bar is supportable on said guide with its cutting extremity free to swing across the front end of said guide about a fixed pivot located in rear of the front end of said guide or held against swinging with said bar atacute angles to said guide and on opposite sides of the lat ter, means whereby during cutting said bar may be swung by power about said pivot, and power driven means wholly carried on said guide and automatically operated when once connected to feed in a given direction,

includingconnections for feeding said bar and said pivot, when the former is in opposite acute angled positions, at a predeterminedrate of feed adapted tocuttmg whereby during cutting said bar may be moved bodily longitudinally of said guide in opposite directions while said cutter chain rotates in one direction.

77. Mining apparatus including a guide disposed perpendicular to a face, a mining machine of the separately operable bottom cutting type thereon having an elongated cutter chain carrying cutter bar, means whereby said bar is supportable on said guide with its cutting extremity free to swing acrossthe front end of said guide about a fixed pivot located in rear of the front end of said guide or held against swinging with said bar at acute angles to said guide and on opposite sides of the latter, means whereby during cutting said bar may be swung by power about said pivot, and

power driven means, wholly carried on said guide and automatically operated when once connected to feed in a given direction, in cluding connections for feeding said bar and said pivot'when the former is in opposite acute angled positions,at apredetermined lit) 7 said cutter chain rotates in one direction,

truck movable over a trackway, a mining 'machine of the separately operable bottom cutting type thereon having an elongated cutter chain carrying cutter bar, means whereby said bar is supportable on said truck with its cutting extremity tree to swing across the front end of said truck about a fix'ed pivot in rear 01 the front end,

ofthe truck or held against swinging with said bar at acute angles to the trackway and on opposite sides of the latter,means whereby during cutting said bar may be swung by power about said pivot, power driven means, wholly carried on said truck and automatically operative when once connected to feed in a given direction, including connections for feeding said bar and said pivot when the former is in opposite acute angled positions, at a predetermined rate of feed adapted to cutting whereby during cutting said bar may be moved bodily longitudinally of the trackway in opposite directions while said cutterv chain rotates in one direction.

79. Mining apparatus including a wheeled truck movable over a track'way, a mining machine of the separately operable bottom cutting type thereon having an elongated cutter chain carrying cutter bar, means whereby said bar is supportable on said truck with its cutting extremity free to swing across the front end of said truck about a fixed pivot in rear of the front end of the truck or held against swinging with said bar at acute angles to the trackway and on opposite sides of the latter, means whereby during cutting said bar may be swung by power about said pivot, and power driven means, wholly carried on said truck and automatically operative when once connected to feed in a given direct-ion, including connections for feeding said bar and said pivot when the former is in opposite acute angled positions, at a predeteiunined rate of feed adapted to cutting whereby during cutting said bar may be moved bodily longitudinally of the trackway in opposite directions while and also including supplemental connections for moving said truck bodily longitudinally.

of the trackway at a' substantially higher transport speed. a I r 80. Mining apparatus including a wheeled truck movable over a trackway, a mining machine o fthe separately operable bottom cutting type thereon having a'motor and an elongated cutter chain carrying cutter bar of said truck about a fixed pivot or held against swinging with said bar at acute angles to a trackway and on opposite sides of the latter, means driven by the same motor whereby during cutting said bar may be swung by power about said pivot, and power driven means driven by the same motor and wholly carried on said truck and automatically operative when once connected to feed in a given direction, including connections for feeding said bar and said pivot when the former is in opposite acute angled positions, at a predetermined rate of feed adapted to cutting whereby during cutting said bar may be moved bodily longitudinally ot the trackway in opposite directions while said cutter chain rotates in one direction.

81. Mining apparatus including a wheeled truck movable over a trackway, a mining machine of the separately operable bottom cutting type thereon having a motor and an elongated cutter chain carrying cutter bar driven thereby, means whereby said bar is supportable on said truck with its cutting extremity tree to swing across the front end or said truck about a fixed pivot or held against swinging with saidbar at acute angles to a trackway and on oppositersides of the latter, means driven by the same motor whereby during cutting saidbar may be swung by power about said pivot, and power driven means driven by the same motor and wholly carried on said truck and automatically operative when once connected to teed in a given direction, including connections for feeding said bar ands-aid pivot when the tormer is in opposite acute angled positions, at a predetermined rate of feed adapted to cutting whereby during cutting said bar may be moved bodily longitudinally of the trackway in'opposite'di-rcctions while said cutter chain rotates in one direction, and also including supplemental connections for moving said truck bodily longitudinally of a traclrway at a substantially highertransport speed.

82. httining apparatus including a wheeled truck movable over a trackway, a mining machine of the separately operable bottom cutting type thereon having an elongated cutter chain carrying cutter bar, means whereby said bar is supportable on said truck with its cutting extremity free to swing across the front end ofsaid truck about a fixed pivot or held. against swinging with said bar at acute angles to a trackway and on opposite sides of the latter, means whereby during cuttingusaid bar may be swung by power about said pivot, power driven means, wholly carried on said truck a and automatically operative when once connected to feed in a given direction, including connections for feeding said bar and said pivot when the former is in opposite acute angled positions, at a predetermined rate of feed adapted to cutting whereby during cutting said bar may be moved bodily longitudinally of the traclrway in opposite directions while said cutter chain rotates in one direction, and truck wheel driving mechanism operatively connectible at will to said mining machine to propel said truck longitudinally of a tracltway at a substantially higher transport speed.

83. Mining apparatus including a wheeled truck movable over a traclrway, a mining machine of the separately operable bottom cutting type thereon having a motor and an elongated cutter chain carrying cutter bar driven thereby, means whereby said bar is supportable on said truck with its cutting e; remity free to swing across the front end or said truck about a fixed pivot or held against swinging with said bar at acute an. es to a trackway and on opposite sides of the latter, means driven by the same motor whereby durin cutting said bar may be swung by power bout said pivot, power driven means driven by the same motor, wholly arried on said truck and automatirally operative when once connected to feed in a given direction, including connections for feeding said bar and said pivot when the former is in opposite acute angled positions, at a predetermined rate of feed adapted to cutting whereby during cutting said bar may be moved bodily longitudinally of the trackway in opposite directions while said cutter chain rotates in one direction, and truck wheel driving mechanism operatively connectible at will to said motor to propel said truck longitudinally of a traclrway at a. substantially higher transport speed.

84. Goal cutting apparatus comprising, in combination, a rotatable turntable, a separable chain cutter coal machine of the sliding bed, chain positioned type, mounted on said turntable, locking means for securing said coal machine to said turntable, turntable supporting means including a non-rotatable turntable base, a portable guiding frame adapted to constitute transport means for said mechanism during movement about a mine, and feeding mechanism to produce relative movement of the turntable base and frame.

85. Goal cutting apparatus comprising, in combination, a rotatable turntable, a separable chain cutter coal machine of the sliding bed, chain positioned type, mounted on said turntable, locking means for securing said coal machine to said turntable, turntable supporting means including a non-rotatable turntable base, a frame directly receiving said base, and feeding mechanism to produce relative movement of the turntable base and frame.

86. Goal cutting apparatus comprising, in combination, a rotatable turntable, a separable chain cutter coal machine of the sliding bed, chain positioned type, mounted on said turntable, locking means for securing said coal machine to said turntable, turntable supporting means including a non-rotatable turntable base, a frame, and feeding mechanism to produce relative movement of said turntable base and said frame, the chain cutter of said coal machine being disposed in horizontal planes closely adjacent said frame.

81 In a mining apparatus, a supporting member presenting longitudinally disposed guiding means extending to a point adjacent the coal face, anchorage means mounted 011 said supporting member, a swivel support movable longitudinally relative to said supporting member and guided by said guiding means, a mining machine support swiveled on said swivel support and movable longitudinally therewith, a mining machine carried by said machine support, said machine being of the type which is separately operable when sliding upon its own bottom on a mine bottom to cut a her-f, and means adapted to be fastened to said anchorage means and driven by saidmachine for moving said machine support longitudinally.

88. In a mining apparatus, a supporting member presenting longitudinally disposed guiding means extending to a point acent the coal face, a supplemental supporting member for the guiding means, anchorage means mounted on said supporting member, a swivel support movable longitudinally relative to said supporting member and guided by said guiding means, a mining'machine support swiveled on said swivel support and movable longitudinally therewith, a mining machine carried by said machine support, said machine being of the type which is separately operable when sliding upon its own bottom on a mine bottom to cut a kerf, and means adapted to be fastened to said anchorage means and driven by said machine for moving said machine support longitudinally.

89. In a mining apparatus, a supporting member presenting longicudinally disposed guiding means extending to a point adjacent the coal face, anchorage means mounted on said supp rting member, swivel support movable longitudinally relative to said supporting member and guioed by said guiding means, a mining machine supportswiveled on said swivel support and movaole longitudinally therewith, a mining machine car red by said machine support, said machine being of the type which is sepa rately operable when sliding upon its own bottom on a mine bottom to cut a kerf, ant flexible means adapted to be fastened to said anchorage means and driven by said machine for moving said machine support longitudinally.

90. In a mining apparatus, a mining machine truck presenting longitudinally disposed side rails constituting guiding means projecting a sunstantial distance in advance of the truck wheels, a swivel support movable relative to said truck and guided by said guiding means, a mining machine support swiveled on said swivel supportand movable therewith, a mining machine'having an elongated cutter chain carrying cutter bar carried by said machine support, said machine being of the type which is separately operable when sliding upon its own bottom on a mine bottom to cut a kerf, means for locking said machine support to said swivel support with said cutter bar disposed at an angle relative to said truck, and flexible means driven by said macnine attached at a point in advance of the swivel support and extendii'ig along and to the rear end of said machine for advancing said swivel support and machine bodily along; said guiding means.

91. Mining apparatus comprng a truck having a long guiding frame of relatively short wheel base, said truck being movable on a mine trackway to the end thereof with the front end of the guiding frame extendbeyond tl e trachway, truck wheel driving connections carried by said truck and comprising a primary power receiving member, and a sliding pivotal support on said guiding fr e adapted to receive a mining machine of the separately operable self-propelled type and positionable on said guiding frame to permit driving by such a machine of said primary power receiving member.

92. Mining apparatus comprising a transport element provided with running gear, supporting means adjustably mounted on said element for movement bodily longitm din-ally thereof and also anp'u'larly relative thereto, driving means for said running gear carried by said element and includinga member rotatable on a stationary axis on sa 1d transport element, and mecnanism supported by said supporting means comprising cutting mechanism, and an actuator motor therefor, feeding means operable by said actuator motor, and means operable by said actuator motor and engageable with said n'ieniber to drive the latter andso said runmay; gear when said supporting means in a predetermined position on said element.

In testimony whereof, I have signed my name to this specification.

JACOB M. LONDON. 

